NOTES:
• Always use room temperature milk so the oils and milk blend properly. Cold milk with warm coconut oil can cause splitting (see the immersion blender note on how to resolve this in case yours spilts).
• Letting the soy milk and vinegar sit for a few minutes is really important. Mixing soy milk with vinegar is just like making buttermilk. It thickens the milk slightly and helps the oils blend in smoothly, so your butter sets creamy instead of splitting.
• For a brighter yellow butter, increase turmeric to ¼ tsp.